Hook



FIG. 1 is a right perspective view of the hook constituting the invention;

FIG. 2 is another perspective view of the invention from above;

FIG. 3 is a perspective view of the back of the invention; and,

FIG. 4 is a right-side perspective view of the invention, the left side being identical.

The broken lines are included for illustrative purposes only and form no part of the claim. 

CLAIM The ornamental design for a hook, as shown and described. 